Stock guide for the rolls of mixing machines and the like



Patented May 19, 19.25,

muren sraTES PATEN 'r OFFICE.4 'I

LEONARD v. DIXON, or ToRoNT-o, ONTARIO, CANADA, AssIGNoR To DUNLOP TINE a RUBBER GOO'DS CO, LIMITED, OF

TORONTO, ONTARIO, vCANADA.

STOCKl GUIDE FOR THE ROLLS F MIX-ING MACHINES AND THE LIKE.

Application filed August 15, 1923. Serial No. 657,561.

To (ZU 'wlw/n. 'it 11mg/ (rom'ern:

Be it known that I, LnoNAiu) V. DIxoN, of the city of rlor'on'to, Province of Ontario, Canada, have invented certain new and useful Improvements in Stock Guides for the Rolls of Mixing- Machines and the like, of which the following is a specification.

This invention is applicable to the rolls of rubber mixing machines and the like for the purpose of retaining the stock between the working surfaces of the rolls and my object is to devise guiding means for the stock which will substantially prevent the stock automatically adjust itself as the rolls are adjusted, to and from one another, which f will deflect any material which may pass to the outer ends of the rlls to a suitable re- 2G subject to wear are readily renewable.

I attain my objects by means of the constructions hereinafter described and illustrated in the accompanying drawings in which A- Fig. l is a plan view of part of a rubber mixing machine provided with my improved stock guide;

Fig. 2 an elevation of the parts shown in Fig. l, the rolls being shown in section;

Fig. 3 a front elevation of the same parts; and

Fig, 4 a cross section, of the stock guide on an enlarged scale.

In the drawings I show a part of the frame 1 of the mixing machine. f In thisjframe are supported the bearing boxes 2 for the rolls 3. @ne or both of these boxes are adjust- Eil tween the rolls may be varied.

in the county of York,"

passing off thc ends of the rolls` which will,

ceptacle; and in which parts particularly able in the frame l so that the distance bealso preferably bevelled as shown in Fig. 4, so that any rubber stock which may enter the recess will be pressed outwardly if the parts of the guide are forced towards one another insteadof being jammed in the end of the recess. The parts 4 and 45 of the guide, it will be noted, are fitted to the contours of the rolls and extend between the same substantially to the plane in which the axes of the rolls lie. y

The parts of the guide are so supported that each is maintained in a fixed relationship to the roll to which it is fitted, the preferred arrangement being to form a bracket 8 on the back of eac-h part, which brackets are secured to the bearing boxes 2.

The guide is preferably so positioned that the back plate 7 may extend past the plane in which the axes of the rolls lie to a position in which it is adapted to direct into a suitable receptacle 9 any rubber stock which, despite the controlling influence of the guide, may tend to pass outwardly after '1t has passed the plane in which the axes of the rolls lie.

The outer edges of the guides are preferably formed of detachable plates 10, which are preferably .inclined outwardly and are fitted closely to the contours of the ends of the rolls. As theedges of the ends of the rolls may be bevelled in various ways, the guide may be adapted to any simply removing the plates 10 and replacing; them by otherl lates suitably shaped to conform to the ro 1s. The ends of the parts of the guide-carrying detachable plates are preferably inclined outwardly so as to tend to direct inwardly all material clinging to the surface of the rollers, which tends to pass off the ends. The lower end of the back plate 7 is also given roll by preferably inclined inwardly to direct materialpassing-between the rolls away from the sides of the frame.

The ends of the parts 4 and between the rollers 'are curved or inclined -b'oth axially and circumferentially of the rolls so as to tend to direct the material inwardly away from ends of the rolls at the point where the two rolls bite.

From Athe above description it will be seen that I have devised a construction which willi 5 projecting satisfactorily attain the objects of my invention as set out in the preamble of this specification.

lVhat I claim is 1. In amachine for rolling' plastic Inaterial the combination with a pair of rolls one of which is provided with adjustable bearings whereby it may be adjusted-to and from the other roll, of a stock guide formed in two overlapping parts tted to the contours of the rolls, each part being supported so that it maintains a. fix-ed relationship to the roll to which it is fitted and the parts move relative to one another when the movable roll is adjusted.

2. In a machine for rolling plastic material the combination with a pair of rolls one of which is provided with adjustable` bearings whereby it may be adjusted to and from the other roll, of a stock uide formed in two overlapping parts fitte to the contours of the ro ls, said parts being secured to the bearings of the rolls, so that each part maintains a fixed relationship to the roll to which it is fitted..

3. In al machine for rolling plastic inateria-l the combination with a pair of rolls one of which is provided with adjustable bearings whereby it may be adjusted to and from the other roll, of a stock guide formed in two parts fitted to the contours of the rolls,y telescoped together at their adjacent edges with their inner surfaces substantially flush, each part being supported so that it maintains a fixed relationship to the roll to which it is fitted and the parts move relative to one another when the movable roll is adjusted. l

4. In a machine for rolling plastic -materia-l the combination with a airiof `rolls one of which is provided witi 'ad'ustable bearinffs whereby it may be adjuste to and from theother roll, of a stock guide .formed in two arts fitted to the contours .of the rolls, a iront plate and a back plate secured to the edge of one part of the guide and overlapping the other part, the parts being recessed to receive the ront plate, each part being supported so that itmaintains a fixed relationship to the roll to which it is fitted f and the parts move relative to one another when the movable roll is adjusted.

5. In a machine for rolling plastic material the combination with a pair of rolls one of which is provided with adjustable bearings whereby it may be adjusted to and from the other roll, of a stock guide formed in two parts fitted to the contours of the rolls, each part being supported so that it maintains a fixed relationship to the roll to which it is fitted, a front plate and a back plate secured-to the, edge ot' one part of the guide and overlapping the other part, the back plate being extended past the plane of the axis of the roll.

6. In a machine for rolling plastic material the combination with a pair of rolls one of which is provided with adjustable bearings whereby it may be adjusted to and from the other roll, of a. stock guide formed in two parts fitted to the contours of .the rolls, each part being supported so that it maintains a fixed relationshipto the roll to which i-t is fitted, a front plate and a back plate secured 'to the edge of one part of the guide and overlapping the other part, the back plate being extended past the plane of the axis of the roll and inclined inwardly at its inner end. 7. In af machine for rolling plastic 'material the combination with a pair of rolls one of which is provided with ad'ustable bearings whereby 1t may be adjuste to and 'from the other roll, of a stock guide formed v in two overlapping parts fitted to the'contours of the rolls, each part being supported so that it maintains a fixed relationship to the roll to which it is fitted, and the parts move relative to one another when the moveable roll is adjusted, the inner ends of the parts of the guide being inclined both ax-l iallv and circnmferent-ially of the rolls.

Signed at Toronto, Canada, this 27th day ofr July 1923.

LEONARD v. DIXON. 

